Service manual

ManualsBrandsScan-Graphics ManualsPrint & ScanCF500/44

7020

guide plate is attached to the upper left corner of the main CB mounting plate. It protects the small

ribbon cable going from the main CB to the optics.

F46-11 shortly after power up.DESCRIPTION: SOLUTION ID:

89008

SOLUTION:

CAUSE: The platen glass is not properly positioned, which results in a failed white reference

reading from the white reference plate attached beneath the glass stopper plate.

SOLUTION: To inspect the white reference sheet, perform the following:

1. Power the copier OFF.

2. Remove the right side panel (p/n 26NA-1260).

3. Remove the platen glass. Inspect the white reference plate, which is attached beneath the

glass stopper plate. Ensure that it is properly positioned and clean.

4. Reinstall the platen glass and power the copier ON.

USAGE:

F35-03 at power up.DESCRIPTION: SOLUTION ID:

103614

SOLUTION:

CAUSE: Fuser heat roller temperature sensors (TH1 and TH2) are not contacting the upper roller.

TH1 and TH2 must contact the heat roller, an air gap between the sensors and the heat roller will

adversely effect how quickly the sensors can detect heat.

SOLUTION: Reform TH1 and TH2 to ensure that they make contact with the fuser heat roller.

Note: Access to TH1 and TH2 is possible by removing the heat roller cleaning web assembly.

USAGE:

Developer on the back side of copies.DESCRIPTION: SOLUTION ID:

82437

SOLUTION:

CAUSE: The PCL has failed or is disconnected.

SOLUTION: Ensure that the PCL (p/n 26NA-2510) is connected and operating. Remove any

spilled developer and ensure that the toner recycle unit is not filled with developer.

USAGE:

FK101, unable to transmit through a PBX phone system.DESCRIPTION: SOLUTION ID:

89274

SOLUTION:

CAUSE: FK101 is not recognizing PBX dial tone.

SOLUTION: Enter a PAUSE after the PBX access code prior to the phone number.

The PAUSE option is available, from the FAX LCD screen, from either the KEY PAD or SETTING

options. A letter P will be displayed when the PAUSE is keyed in.

Notes:

1. OFF HOOK transmissions will function fine without entering a PAUSE.

2. It may necessary to enter multiple Pause's based on the PBX system.

3. PBX external line code recognition can be programmed into the FK101, please refer to page

5-56 and 5-57 of the FK101 user's manual. Programming this recognition will eliminate the need to

enter a PAUSE after the PBX external line code.

The FK101 will recognize the PBX external line code and wait for the dial tone prior to dialing the

fax number.

USAGE:

F51-4 and/or deletions from front-to-rear.DESCRIPTION: SOLUTION ID:

84140

SOLUTION:

CAUSE: Developing guide shaft holder (p/n 26NA30660) is drawing the developing unit too close

to the drum causing incorrect DSD and possibly binding the developer drive motor (M3).

SOLUTION: Locate the [[developing guide shaft holder bracket| IMAGE V:\bitmaps\cjc223.bmp

SCROLL]] shown on page 24 of the 7020 Parts Catalog. There are no specific adjustment

procedures if this bracket is removed and then replaced. As a general standard, the outline of the

black molded plastic (developing guide shaft holder bracket), where screw "e" is shown on page 24

of the 7020 Parts Catalog, should be flush with the metal housing. There is 1mm play on this

bracket.

Notes:

1. See page 24 in the 7020 Parts Catalog (1st Edition, February, 2000). This part is not available

for replacement, and is not listed, but can be viewed.

2. The rounded edge of the holder bracket, where screw "e" is installed, should be flush with the

metal housing, not the flat portion.

3. [[Copy quality sample hyperlink.| IMAGE V:\bitmaps\cjc221.bmp SCROLL]]

USAGE:

No power, display is completely blank.DESCRIPTION: SOLUTION ID:

93739

SOLUTION:

CAUSE: The operation board has failed, resulting in no recognition of serial data sent from the

main CB.

SOLUTION: To check the operation board, perform the following:

USAGE:

May 2005